Detachment fault control on hydrothermal circulation systems: Interpreting the subsurface beneath the TAG hydrothermal field using the isotopic and geological evolution of oceanic core complexes in the Atlantic

Geophysical Monograph Series

Volumn 188, Issue , 2010, Pages 207-239

  McCaig, Andrew M ^a   Delacour, Adélie ^b,c   Fallick, Anthony E ^d   Castelain, Teddy ^a   Früh Green, Gretchen L ^b  

^a UNIVERSITY OF LEEDS   (United Kingdom)

^b ETH ZURICH   (Switzerland)

^c INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

^d SCOTTISH UNIVERSITIES ENVIRONMENTAL RESEARCH CENTRE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84899845612     PISSN: None     EISSN: None     Source Type: Book Series    
DOI: 10.1029/2008GM000729     Document Type: Article

References (130)

1. Abart, R., and D. Pozzorini (2000), Implications of kinetically controlled mineral-fluid exchange on the geometry of stable-isotope fronts, Eur. J. Mineral., 12, 1069-1082.
2. Agrinier, P., M. Javoy, and J. Girardeau (1988), Hydrothermal activity in a peculiar oceanic ridge: Oxygen and hydrogen isotope evidence in the Xigaze Ophiolite (Tibet, China), Chem. Geol., 71, 313-335.
3. Agrinier, P., R. Hékinian, D. Bideau, and M. Javoy (1995), O and H stable isotope compositions of oceanic crust and upper mantle rocks exposed in the Hess Deep near the Galapagos Triple Junction, Earth Planet. Sci. Lett., 136, 183-196.
4. Albarède, F., A. Michard, J. F. Minster, and G. Michard (1981), 87Sr/86Sr ratios in hydrothermal waters and deposits from the East Pacific Rise at 21°N, Earth Planet. Sci. Lett., 55, 229-236.
5. Allen, D. E., and W. E. Seyfried Jr. (2004), Serpentinization and heat generation: Constraints from Lost City and Rainbow hydrothermal systems, Geochim. Cosmochim. Acta, 68, 1347-1355.
6. Alt, J. C., D. A. H. Teagle, W. Bach, A. N. Halliday, and J. Erzinger (1996), Stable and strontium isotope profiles through hydrothermally altered upper ocean crust, Hole 505B, in Proc. Ocean Drill. Program Sci. Results, vol. 148, edited by J. C. Alt et al., pp. 57-70, Ocean Drilling Program, College Station, Tex.
7. Alt, J. C., W. C. Shanks, W. Bach, H. Paulick, C. J. Garrido, and G. Beaudoin (2007), Hydrothermal alteration and microbial sulfate reduction in peridotite and gabbro exposed by detachment faulting at the Mid-Atlantic Ridge, 15°20'N (ODP Leg 209): A sulfur and oxygen isotope study, Geochem. Geophys. Geosyst., 8, Q08002, doi/10.1029/2007GC001617.
8. Augustin, N., K. S. Lackschewitz, and T. Kuhn (2008), Mineralogical and chemical mass changes in mafic and ultramafic rocks from the Logatchev hydrothermal field (MAR 15°N), Mar. Geol., 256, 18-29.
9. Bach, W., C. J. Garrido, H. Paulick, J. Harvey, and M. Rosner (2004), Seawater-peridotite interactions: First insights from ODP Leg 209, MAR 15°N, Geochem. Geophys. Geosyst., 5, Q09F26, doi:10.1029/2004GC000744.
10. Bach, W., H. Paulick, C. J. Garrido, B. Ildefonse, W. P. Meurer, and S. E. Humphris (2006), Unraveling the sequence of serpentinization reactions: Petrography, mineral chemistry, and petrophysics of serpentinites from MAR 15°N (ODP Leg 209, Site 1274), Geophys. Res. Lett., 33, L13306, doi:10.1029/2006GL025681.
11. Badertscher, N. P., R. Abart, M. Burkhard, and A. M. McCaig (2002), Fluid flow pathways along the Glarus overthrust derived from stable and Sr-isotope patterns, Am. J. Sci., 302, 517-547, doi:10.2475/ajs.302.6.517.
12. Beard, J. S., B. R. Frost, P. Fryer, A. M. McCaig, R. Searle, B. Ildefonse, P. Zinin, and S. K. Sharma (2009), Onset and progression of serpentinization and magnetite formation in olivine-rich troctolite from IODP Hole U1309D, J. Petrol., 50(3), 387-403, doi:10.1093/petrology/egp004.
13. Behn, M. D., and G. Ito (2008), Magmatic and tectonic extension at mid-ocean ridges: 1. Controls on fault characteristics, Geochem. Geophys. Geosyst., 9, Q08O10, doi:10.1029/2008GC001965.
14. Bickle, M. J. (1992), Transport mechanisms by fluid flow in metamorphic rocks: Oxygen and strontium decoupling in the Trois Seigneurs Massif-A consequence of kinetic dispersion, Am. J. Sci., 292, 289-316.
15. Bickle, M. J., and J. Baker (1990), Advective-diffusive transport of isotopic fronts: An example from Naxos, Greece, Earth Planet. Sci. Lett., 97, 78-93.
16. Bickle, M. J., and D. A. H. Teagle (1992), Strontium alteration in the Troodos ophiolite: Implications for fluid fluxes and geochemical transport in mid-ocean ridge hydrothermal systems, Earth Planet. Sci. Lett., 113, 219-237.
17. Bickle, M. J., D. A. H. Teagle, J. Beynon, and H. J. Chapman (1998), The structure and controls on fluid-rock interactions in ocean ridge hydrothermal systems: Constraints from the Troodos ophiolite, in Modern Ocean Floor Processes and the Geological Record, vol. 148, edited by R. A. Mills and K. Harrison, pp. 127-152, Geological Society.
18. Blackman, D. K., J. R. Cann, B. Jannsen, and D. K. Smith (1998), Origin of extensional core complexes: Evidences from the Mid-Atlantic Ridge at Atlantis Fracture Zone, J. Geophys. Res., 103(B9), 21,315-21,333.
19. Blackman, D. K., et al. (2002), Geology of the Atlantis Massif (Mid-Atlantic Ridge, 30°N): Implications for the evolution of an ultramafic oceanic core complex, Mar. Geophys. Res., 23, 443-469.
20. Blackman, D. K., B. Ildefonse, B. E. John, Y. Ohara, D. J. Miller, C. J. MacLeod, and the Expedition 304/305 Scientists (2006), Proceedings Integrated Ocean Drilling Program, 304/305, doi:10.2204/iodp.proc.304305.2006, Integrated Ocean Drilling Program Management International, Inc., College Station, Tex.
21. Boschi, C., G. L. Früh-Green, A. Delacour, J. A. Karson, and D. S. Kelley (2006a), Mass transfer and fluid flow during detachment faulting and development of an oceanic core complex, Atlantis Massif (MAR 30°N), Geochem. Geophys. Geosyst., 7, Q01004, doi:10.1029/2005GC001074.
22. Boschi, C., G. L. Früh-Green, and J. Escartín (2006b) Occurrence and significance of serpentine-hosted, talc-And amphibole-rich fault rocks in modern oceanic settings and ophiolite complexes: An overview, Ofioliti, 31, 129-140.
23. Boschi, C., A. Dini, G. L. Früh-Green, and D. S. Kelley (2008), Isotopic and element exchange during serpentinization and metasomatism at the Atlantis Massif: Insights from B and Sr isotopes, Geochim. Cosmochim. Acta, 72(7), 1801-1823, doi:10.1016/j. gca.2008.01.013.
24. Bowman, J. R., S. D. Willett, and S. J. Cook (1994), Oxygen isotopic transport and exchange during fluid flow, one-dimensional models and applications, Am. J. Sci., 294, 1-55.
25. Campbell, A. C., et al. (1988), Chemistry of hot springs on the Mid-Atlantic Ridge, Nature, 335, 514-519, doi:10.1038/335514a0.
26. Canales, J. P., B. E. Tucholke, and J. A. Collins (2004), Seismic reflection imaging of an oceanic detachment fault: Atlantis megamullion (Mid-Atlantic Ridge, 30°10'N), Earth Planet, Sci. Lett., 222, 543-560.
27. Canales, J. P., B. E. Tucholke, M. Xu, J. A. Collins, and D. L. DuBois (2008), Seismic evidence for large-scale compositional heterogeneity of oceanic core complexes, Geochem. Geophys. Geosyst., 9, Q08002, doi:10.1029/2008GC002009.
28. Cann, J. R., D. K. Blackman, D. K. Smith, E. McAllister, B. Janssen, S. Mello, E. Avgerinos, A. R. Pascoe, and J. Escartin (1997), Corrugated slip surfaces formed at ridge-Transform intersections on the Mid-Atlantic Ridge, Nature, 385, 329-332.
29. Cannat, M., Y. Lagabrielle, H. Bougault, J. Casey, N. de Coutures, L. Dmitriev, and Y. Fouquet (1997), Ultramafic and gabbroic exposures at the Mid-Atlantic Ridge: Geological mapping in the 15°N region, Tectonophysics, 279, 193-213.
30. Cannat, M., J. Cann, and J. Maclennan (2004), Some hard rock constraints on the supply of heat to mid-ocean ridges, in Midocean Ridges: Hydorthermal Interactions Between the Lithosphere and Oceans, Geophys. Monogr. Ser., vol. 148, edited by C. German, J. Lin, and L. M. Parson, pp. 111-149, AGU, Washington, D. C.
31. Cave, R. R., C. R. German, J. Thomson, and R. W. Nesbitt (2002), Fluxes to sediments underlying the Rainbow hydrothermal plumes at 36°14'N on the Mid-Atlantic Ridge, Geochim. Cosmochim. Acta, 66, 1905-1923.
32. Charlou, J.-L., Y. Fouquet, H. Bougault, J.-P. Donval, J. Etoubleau, P. Jean-Baptiste, A. Dapoigny, P. Appriou, and P. A. Rona (1998), Intense CH4 plumes generated by serpentinization of ultramafic rocks at the intersection of the 15°20'N fracture zone and the Mid-Atlantic Ridge, Geochim. Cosmochim. Acta, 62, 2323-2333.
33. 2 and CH4 vent fluids issuing from ultramafic rocks at the Rainbow hydrothermal field (36°14'N, MAR), Chem. Geol., 191, 345-359.
34. Chiba, H., H. Masuda, S. Y. Lee, and K. Fujioka (2001), Chemistry of hydrothermal fluids at the TAG active mound, MAR 26°N, in 1998, Geophys. Res. Lett., 28, 2919-2922, doi:10.1029/2000GL012645.
35. Cole, D. R., and E. M. Ripley (1999), Oxygen isotope fractionation between chlorite and water from 170 to 350°C: A preliminary assessment based on partial exchange and fluid rock experiments, Geochim. Cosmochim. Acta, 63, 449-457.
36. 2O from 300 to 800°C, Geochim. Cosmochim. Acta, 68, 3569-3585.
37. Collins, J. A., B. E. Tucholke, and J. P. Canales (2001), Structure of Mid-Atlantic Ridge megamullions from seismic refraction experiments and multichannel seismic reflection profiling, Eos Trans. AGU, 82, Fall Meet. Suppl., Abstract F1100.
38. Delacour, A., G. L. Früh-Green, M. Frank, M. Gutjahr, and D. S. Kelley (2008a), Sr-And Nd-isotope geochemistry of the Atlantis Massif (30°N, MAR): Implications for fluid fluxes and lithospheric heterogeneity, Chem. Geol., 254, 19-35, doi:10.1016/j. chemgeo.2008.05.018.
39. Delacour, A., G. L. Früh-Green, S. M. Bernasconi, P. Schaeffer, and D. S. Kelley (2008b), Carbon geochemistry of serpentinites in the Lost City hydrothermal system, Geochim. Cosmochim. Acta, 72, 3681-3702. doi:10.1016/j.gca.2008.04.039.
40. Delacour, A., G. L. Früh-Green, S. M. Bernasconi, and D. S. Kelley (2008c), Sulfur in peridotites and gabbros at Lost City (30°N, MAR): Implications for hydrothermal alteration and microbial activity, Geochim. Cosmochim. Acta, 72, 5090-5110, doi:10.1016/j.gca.2008.07.017.
41. deMartin, B. J., R. A. Sohn, J. P. Canales, and S. E. Humphris (2007), Kinematics and geometry of active detachment faulting beneath the TAG hydrothermal field on the Mid-Atlantic Ridge, Geology, 35, 711-741, doi: 10.1130/G23718A.1.
42. Dick, H. J. B., H. Natland, P. S. Meyer, D. G. Gallo, H. Berg, R. Tyce, P. Patriat, K. T. M. Johnson, J. Snow, and A. Fischer (1991), Tectonic evolution of the Atlantis II Fracture Zone, Proc. Ocean Drill. Program Sci. Results, 118, 359-398.
43. Dick, H. J. B., et al. (2000), Along in situ section of lower oceanic crust: Results of ODP Leg 176 drilling at the Southwest Indian Ridge, Earth Planet. Sci. Lett., 179, 31-51.
44. Dick, H. J. B., J. Lin, and H. Schouten (2003), An ultraslowspreading class of ocean ridge, Nature, 426, 405-411.
45. Dick, H. J. B., M. A. Tivey, and B. E. Tucholke (2008), Plutonic foundation of a slow-spreading ridge segment: Oceanic core complex at Kane Megamullion, 23°30'N, 45°20'W, Geochem. Geophys. Geosyst., 9, Q05014, doi:10.1029/2007GC001645.
46. Douglass, J., and J.-G. Schilling (2000), Systematics of three component, pseudo-binary mixing lines in 2D isotope ratio space representations and implications for mantle plume-ridge interaction, Chem. Geol., 163, 1-23, doi:10.1016/S0009-2541(99)00070-4.
47. Douville, E., J. L. Charlou, E. H. Oelkers, P. Bienvenu, C. F. Jove Colon, J. P. Donval, Y. Fouquet, D. Prieur, and P. Appriou (2002), The Rainbow vent fluids (36°4'N, MAR): The influence of ultramafic rocks and phase separation on trace metal content in Mid-Atlantic Ridge hydrothermal fluids, Chem. Geol., 184, 37-48.
48. Escartín, J., C. Mével, C. J. MacLeod, and A. M. McCaig (2003), Constraints on deformation conditions and the origin of oceanic detachments: The Mid-Atlantic Ridge core complex at 15°45'N, Geochem. Geophys. Geosyst., 4(8), 1067, doi:10.1029/2002GC000472.
49. Escartín, J., M. Andreani, G. Hirth, and B. Evans (2008a), Relationships between the microstructural evolution and the rheology of talc at elevated pressures and temperatures, Earth Planet. Sci. Lett., 268, 463-475.
50. Escartín, J., D. K. Smith, J. R. Cann, H. Schouten, C. H. Langmuir, and S. Escrig (2008b), Central role of detachment faults in accretion of slow spreading oceanic lithosphere, Nature, 455, 790-794, doi:10.1038/nature07333.
51. Expedition Scientific Party (2005a), Oceanic core complex formation, Atlantis Massif (online), IODP Prelim. Rept., 304. (Available at http://iodp.tamu.edu/publications/PR/304PR/304PR.PDF)
52. Expedition Scientific Party (2005b), Oceanic core complex formation, Atlantis Massif (online), IODP Prelim. Rept., 305. (Available at http://iodp.tamu.edu/publications/PR/305PR/305PR.PDF)
53. Fallick, A. E., C. I. Macaulay, and R. S. Haszeldine (1993), Implications of linearly correlated oxygen and hydrogen isotopic compositions for kaolinite and illite in the Magnus Sandstone, Clays Clay Miner., 41, 184-190.
54. Fouquet, Y., et al. (1997), FLORES diving crusie with the Nautile near the Azores-First dives on the Rainbow Field: Hydrothermal seawater/mantle interaction, InterRidge News, 7, 24-28.
55. Foustoukos, D. I., I. P. Savov, and D. R. Janecky (2008), Chemical and isotopic constraints on water/rock interactions at the Lost City hydrothermal field, 30°N Mid-Atlantic Ridge, Geochim. Cosmoshim Acta, 72, 5457-5474.
56. Frost, B. R., J. S. Beard, A. M. McCaig, and E. Condliffe (2008), The formation of micro-rodingites from IODP Hole U1309D: Key to understanding the process of serpentinization, J. Petrol., 49, 1579-1588.
57. Früh-Green, G. L., D. S. Kelley, S. M. Bernasconi, J. A. Karson, K. A. Ludwig, D. A. Butterfield, C. Boschi, and G. Proskurowski (2003), 30,000 Years of hydrothermal activity at the Lost City Vent Field, Science, 301, 495-498.
58. Fujiwara, T., J. Lin, T. Matsumoto, P. B. Kelemen, B. E. Tucholke, and J. F. Casey (2003), Crustal evolution of the Mid-Atlantic Ridge near the Fifteen-Twenty Fracture Zone in the last 5 Ma, Geochem. Geophys. Geosyst., 4(3), 1024, doi:10.1029/2002GC000364.
59. Gao, Y., J. Hoefs, R. Przybilla, and J. E. Snow (2006), A complete oxygen isotope profile through the lower oceanic crust, ODP Hole 735B, Chem. Geol., 233, 217-234.
60. Garcés, M., and J. S. Gee (2007), Paleomagnetic evidence of large footwall rotations associated with low-Angle faults at the Mid-Atlantic Ridge, Geology, 35, 279-282, doi:10.1130/G23165A.1.
61. German, C. R., and J. Lin (2004), The thermal structure of the oceanic crust, ridge-spreading and hydrothermal circulation: How well do we understand their inter-connections, in Mid-ocean Ridges: Hydorthermal Interactions Between the Lithosphere and Oceans, Geophys. Monogr. Ser., vol. 148, edited by C. German, J. Lin, and L. M. Parson, pp. 111-149, AGU, Washington, D. C.
62. Gillis, K. M., L. A. Coogan, and R. Pedersen (2005), Strontium isotope constraints on fluid flow in the upper oceanic crust at the East Pacific Rise, Earth Planet. Sci. Lett., 232, 83-94.
63. Gràcia, E., J. L. Charlou, J. Radford-Knoery, and L. M. Parson (2000), Non-Transform offsets along the Mid-Atlantic Ridge south of the Azores (38°N-34°N): Ultramafic exposures and hosting of hydrothermal vents, Earth Planet. Sci. Lett., 177, 89-103.
64. Grimes, C. B., B. E. John, M. J. Cheadle, and J. L. Wooden (2008), Protracted construction of gabbroic crust at a slow spreading ridge: Constraints from 206Pb/238U zircon ages from Atlantis Massif and IODP Hole U1309D (30°N, MAR), Geochem. Geophys. Geosyst., 9, Q08012, doi:10.1029/ 2008GC002063.
65. Harmon, R. S., and J. Hoefs (1995), Oxygen isotope heterogeneity of the mantle deduced from global 18O systematics of basalts from different geotectonic settings, Contrib. Mineral. Petrol., 120, 95-114.
66. Harris, M. (2006), Metamorphic conditions during deformation of gabbro and basalt in an oceanic core complex at 30°N, Mid-Atlantic Ridge; IODP Site U1309, unpublished Master thesis, Leeds University.
67. Hart, S. R., J. S. Blusztajn, H. J. B. Dick, P. S. Meyer, and K. Muehlenbachs (1999), The fingerprint of seawater circulation in a 500-meter section of ocean crust gabbros, Geochim. Cosmochim. Acta, 63, 4059-4080.
68. Holdsworth, R. E. (2004), Weak faults-Rotten cores, Science, 303, 181-182.
69. Humphris, S. E., and J. R. Cann (2000), Constraints on the energy and chemical balances of the modern TAG and ancient Cyprus seafloor sulfide deposits, J. Geophys. Res., 105, 28,477-28,488, doi:10.1029/2000JB900289.
70. Humphris, S. E., and M. K. Tivey (2000), A synthesis of geological and geochemical investigations of the TAG hydrothermal field; insights into fluid-flow and mixing processes in a hydrothermal system, in Ophiolites and Ocean Crust: New Insights from Field Studies and the Ocean Drilling Program, Spec. Pap. Geol. Soc. Am., vol. 349, edited by Y. Dilek et al., pp. 213-235.
71. Humphris, S. E., et al. (1995), The internal structure of an active sea-floor massive sulphide deposit, Nature, 377, 713-716, doi:10.1038/377713a0.
72. Ildefonse, B., D. Blackman, B. E. John, Y. Ohara, D. J. Miller, C. J. MacLeod, and IODP Expeditions 304/305 Science Party (2007), Oceanic core complexes and crustal accretion at slow spreading ridges, Geology, 35, 623-626.
73. Jean-Baptiste, P., J. L. Charlou, and M. Stievenard (1997), Oxygen isotope study of mid-ocean ridge hydrothermal fluids: Implications for the oxygen-18 budget of the oceans, Geochim. Cosmochim. Acta, 61, 2669-2677.
74. John, B. E., D. A. Foster, J. M. Murphy, M. J. Cheadle, A. G. Baines, M. Fanning, and P. Copeland (2004), Determining the cooling history of in situ lower oceanic crust-Atlantis bank, SW Indian Ridge, Earth Planet. Sci. Lett., 222, 145-160, doi:10.1016/j. epsl.2004.02.014.
75. Karson, J. A., G. L. Früh-Green, D. S. Kelley, E. A. Williams, D. R. Yoerger, and M. Jakuba (2006), Detachment shear zone of the Atlantis Massif core complex, Mid-Atlantic Ridge, 30°N, Geochem. Geophys. Geosyst., 7, Q06016, doi:10.1029/2005GC001109.
76. Kelemen, P. B., E. Kikawa, D. J. Miller, and Shipboard Scientific Party (2004), Proc. Ocean Drill. Program Initial Rep., vol. 209, doi: 10.2973/odp.proc.ir.209.2004, Ocean Drill. Program, College Station, Tex.
77. Kelemen, P. B., E. Kikawa, and D. J. Miller (2007), Proc. Ocean Drill. Program Sci. Results, vol. 209, doi:10.2973/odp.proc. sr.209.2007, Ocean Drill. Program, College Station, Tex.
78. Kelley, D. S., et al. (2001), An off-Axis hydrothermal vent field near the Mid-Atlantic Ridge at 30°N, Nature, 412, 145-149.
79. Kelley, D. S., et al. (2005), A serpentinite-hosted ecosystem: The Lost City Hydrothermal Field, Science, 307, 1428-1434.
80. Kuhn, T., et al. (2004), The Logatchev Hydrothermal field-Revisited: Preliminary results of the R/V METEOR cruise and HYDROMAR I (M60/3), InterRidge News, 13, 1-4.
81. Lalou, C., J.-L. Reyss, E. Brichet, P. A. Rona, and G. Thompson (1995), Hydrothermal activity on a 105-year scale at a slow-spreading ridge, TAG hydrothermal field, Mid-Atlantic Ridge 26°N, J. Geophys. Res., 100(B9), 17,855-17,862, doi:10.1029/95JB01858.
82. Lalou, C., J.-L. Reyss, and E. Brichet (1998), Age of sub-bottom sulfide samples at the TAG active mound, in Proc. Ocean Drill. Program Sci. Results, vol. 158, edited by P. M. Herzig et al., pp. 111-117, Ocean Drill. Program, College Station, Tex.
83. Lassey, K. R., and P. Blattner (1988), Kinetically controlled oxygen isotope exchange between fluid and rock in one-dimensional advective flow, Geochim. Cosmochim. Acta, 52, 2169-2175.
84. Lavier, L. L., W. R. Buck, and A. N. B. Poliakov (1999), Selfconsistent rolling-hinge model for the evolution of large-offset low-Angle normal faults, Geology, 27, 1127-1130.
85. Lewis, S., M. B. Holness, and C. M. Graham (1998), Ion microprobe study of marble from Naxos, Greece; grain-scale fluid pathways and stable isotope equilibration during metamorphism, Geology, 26, 935-938.
86. Lisitsyn, A. P., Y. A. Bogdanov, L. P. Zonenshain, M. I. Kuzmin, and A. Sagalevitch (1989), Hydrothermal phenomena in the Mid-Atlantic Ridge at latitude 26 N (TAG hydrothermal field), Int. Geol. Rev., 31, 1183-1198.
87. Macaulay, C. I., A. E. Fallick, R. S. Haszeldine, and C. M. Graham (2000), Methods of laser-based stable isotope measurement applied to diagenetic cements and hydrocarbon reservoir quality, Clay Miner., 35, 313-322.
88. MacLeod, C. J., et al. (2002), Direct geological evidence for oceanic detachment faulting: The Mid-Atlantic Ridge, 15°45'N, Geol. Soc. Am., 30, 879-882.
89. McCaig, A. M. (1988), Deep fluid circulation in fault zones, Geology, 16, 867-870.
90. McCaig, A. M. (1997), The geochemistry of volatile fluid flow in shear zones, in Deformation Enhanced Melt Segregation and Metamorphic Fluid Transport, edited by M. Holness, pp. 227-260, CRC Press, London.
91. McCaig, A. M., D. M. Wayne, J. D. Marshall, D. A. Banks, and I. Henderson (1995), Isotopic and fluid inclusion studies of fluid movement along the Gavarnie Thrust, central Pyrenees: Reaction fronts in carbonate mylonites, Am. J. Sci., 295, 309-343.
92. McCaig, A. M., R. A. Cliff, J. Escartin, A. E. Fallick, and C. J. MacLeod (2007), Oceanic detachment fault focus very large volumes of black smoker fluids, Geology, 35, 935-938, doi:10.1130/G23657A.1.
93. Mehl, L., and G. Hirth (2008), Plagioclase preferred orientation in layered mylonites: Evaluation of flow laws for the lower crust, J. Geophys. Res., 113, B05202, doi:10.1029/2007JB005075.
94. Michibayashi, K., T. Hirose, T. Nozaka, Y. Harigane, J. Escartin, H. Delius, M. Linek, and Y. Ohara (2008), Hydration due to high-T brittle failure within in situ oceanic crust, 30°N Mid-Atlantic Ridge, Earth Planet. Sci. Lett., 275, 348-354.
95. Morris, A., J. S. Gee, N. Pressling, B. E. John, C. J. MacLeod, C. B. Grimes, and R. C. Searle (2008), Evidence for footwall rotation in an oceanic core complex from IODP core samples reoriented using borehole wall imagery, Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract T41D-05.
96. Muhlenbachs, K. (1986), Alteration of the oceanic crust and the 18O history of seawater, Rev. Mineral. Geochem., 16, 425-444.
97. Nozaka, T., P. Fryer, and M. Andreani (2008), Formation of clay minerals and exhumation of lower-crustal rocks at Atlantis Massif, Mid-Atlantic Ridge, Geochem., Geophys., Geosyst., 9, Q11005, doi:10.1029/2008GC002207.
98. Ohara, Y., T. Yoshida, and S. Kasuga (2001), Giant megamullion in the Perece Vela Backarc basin, Mar. Geophys. Res., 22, 47-61.
99. Ohara, Y., R. J. Stern, T. Ishii, H. Yurimoto, and T. Yamazaki (2002), Peridotites from the Mariana Trough: First look at the mantle beneath an active backarc basin, Contrib. Mineral. Petrol., 143, 1-18.
100. Ohara, Y., K. Fujioka, T. Ishii, and H. Yurimoto (2003), Peridotites and gabbros from the Parece Vela backarc basin: Unique tectonic window in an extinct backarc spreading ridge, Geochem. Geophys. Geosyst., 4(7), 8611, doi:10.1029/2002GC000469.
101. Palmer, M. R., and J. M. Edmond (1989), The strontium isotope budget of the modern ocean, Earth Planet. Sci. Lett., 92, 11-26.
102. Parker, C. M., and K. L. von Damm (2005), Time series fluid compositions from the TAG Hydrothermal Mound, MAR: 1986-2004, Eos Trans. AGU, 86, Fall Meet. Suppl., Abstract OS22A-07.
103. Proskurowski, G., M. D. Lilley, D. S. Kelley, and E. J. Olson (2006), Low temperature volatile production at the Lost City Hydrothermal Field, evidence from a hydrogen stable isotope geothermometer, Chem. Geol., 229, 331-343.
104. Rona, P. A., R. A. Pockalny, and G. Thompson (1986), Geologic setting and heat transfer of black smokers at TAG hydrothermal field, Mid-Atlantic Ridge 26°N, Eos Trans. AGU, 67, 1021.
105. Rona, P. A., M. D. Hannington, C. V. Raman, G. Thompson, M. K. Tivey, S. E. Humphris, C. Lalou, and S. Petersen (1993), Active and relict sea-floor hydrothermal mineralization at the TAG hydrothermal field, Mid-Atlantic Ridge, Econ. Geol., 88, 1987-2013.
106. Sakai, H., M. Kusakabe, M. Noto, and T. Ishii (1990), Origin of waters responsible for serpentinization of the Izu-Ogasawara-Mariana forearc seamounts in view of hydrogen and oxygen isotope ratios, Earth Planet. Sci. Lett., 100, 291-303.
107. Schiffman, P., and B. M. Smith (1988), Petrology and oxygen isotope geochemistry of a fossil seawater hydrothermal system within the Solea graben, northern Troodos ophiolite, Cyprus, J. Geophys. Res., 93, 4612-4624.
108. Schmidt, K., A. Koschinsky, D. Garbe-Schönberg, L. M. de Carvalho, and R. Seifert (2007), Geochemistry of hydrothermal fluids from the ultramafic-hosted Logatchev hydrothermal field, 15°N on the Mid-Atlantic Ridge: Temporal and spatial investigation, Chem. Geol., 242, 1-21.
109. Schroeder, T., and B. E. John (2004), Strain localization on an oceanic detachment fault system, Atlantis Massif, 30°N, Mid-Atlantic Ridge, Geochem. Geophys. Geosyst., 5, Q11007, doi:10.1029/2004GC000728.
110. Schroeder, T., M. Cheadle, H. J. B. Dick, U. Faul, J. F. Casey, and P. B. Kelemen (2007), Non-volcanic seafloor spreading and corner-flow rotation accommodated by extensional faulting at 15°N on the Mid Atlantic Ridge: A structural synthesis of ODP Leg 209, Geochem. Geophys. Geosyst., 8, Q06015, doi:10.1029/2006GC001567.
111. Scott, R. B., P. A. Rona, B. A. McGregor, and M. R. Scott (1974), The TAG hydrothermal field, Nature, 251, 301-302, doi:10.1038/251301a0.
112. Shanks, W. C. (2003), Stable isotope in seafloor hydrothermal systems, in Stable Isotope Geochemistry, Rev. Mineral. Geochem., vol. 43, edited by J. W. Valley and D. R. Cole, pp. 469-525, Mineralogical Society of America.
113. Sharp, Z. D. (1990), A laser-based microanalytical method for the in situ determination of oxygen isotope ratios of silicates and oxides, Geochem. Cosmochim. Acta, 54, 1353-1357.
114. Sheppard, S. M. F. (1980), Isotopic evidence for the origin of waters during metamorphic processes in oceanic crust and ophiolitic complexes, Coll. Int. C.N.R.S., 272, 135-147.
115. Smith, D. K., J. R. Cann, and J. Escartín (2006), Widespread active detachment faulting and core complex formation near 13°N on the Mid-Atlantic Ridge, Nature, 442, 440-443.
116. Smith, D. K., J. Escartín, H. Schouten, and J. R. Cann (2008), Fault rotation and core complex formation: Significant processes in seafloor formation at slow spreading mid-ocean ridges (Mid-Atlantic Ridge, 13°-15°N), Geochem. Geophys. Geosyst., 9, Q03003, doi:10.1029/ 2007GC001699.
117. Sudarikov, S. M., and A. B. Roumiantsev (2000), Structure of hydrothermal plumes at the Logachev vent field, 14 450N, Mid-Atlantic Ridge: Evidence from geochemical and geophysical data, J. Volcanol. Geotherm. Res., 101, 245-252.
118. Suhr, G., E. Hellebrand, K. Johnson, and D. Brunelli (2008), Stacked gabbro units and intervening mantle: A detailed look at a section of IODP Leg 305, Hole U1309D, Geochem., Geophys., Geosyst., 9, Q10007, doi:10.1029/ 2008GC002012.
119. Tamura, A., S. Arai, S. Ishimaru, and E. S. Andal (2008), Petrology and geochemistry of peridotites from IODP Site U1309 at Atlantis Massif, MAR 30°N: Micro-And macro-scale melt penetrations into peridotites, Contrib. Mineral., Petrol., 155, 491-509.
120. 2O in granitic batholiths, J. Geol. Soc. London, 133, 509-558.
121. Teagle, D. A. H., M. J. Bickle, and J. C. Alt (2003), Recharge flux to ocean ridge black smoker systems: A geochemical estimate from ODP Home 504B, Earth Planet. Sci. Lett., 210, 81-89.
122. Thurnherr, A. M., and K. J. Richards (2001), Hydrography and high-Temperature heat flux of the Rainbow hydrothermal site (36°14'N, Mid-Atlantic Ridge), J. Geophys. Res., 106(C5), 9411-9426.
123. Thurnherr, A. M., K. J. Richards, C. R. German, G. F. Lane-Serff, and K. G. Speer (2002), Flow and mixing in the rift valley of the Mid-Atlantic Ridge, J. Phys. Oceanogr., 32, 1763-1778.
124. Tivey, M. A., H. Schouten, and M. C. Kleinrock (2003), A nearbottom magnetic survey of the Mid-Atlantic Ridge axis at 26°N: Implications for the tectonic evolution of the TAG segment, J. Geophys. Res., 108(B5), 2277, doi:10.1029/2002JB001967.
125. Tucholke, B., M. D. Behn, and W. R. Buck (2008), Role of melt supply in oceanic detachment faulting and formation of megamullions, Geology, 36, 455-458.
126. Tucholke, B. E., J. Lin, and M. C. Kleinrock (1998), Megamullions and mullion structure defining oceanic metamorphic core complexes on the Mid-Atlantic Ridge, J. Geophys. Res., 103(B5), 9857-9866.
127. Wenner, D. B., and H. J. P. Taylor (1971), Temperatures of serpentinisation of ultramafic rocks based on 18O/16O fractionation between coexisting serpentinite and magnetite, Contrib. Mineral. Petrol., 32, 165-185.
128. Wenner, D. B., and H. J. P. Taylor (1973), Oxygen and hydrogen isotope studies of the serpentinization of ultramafic rocks in oceanic environments and continental ophiolite complexes, Am. J. Sci., 273, 207-239.
129. Yardley, B. W. D., and G. E. Lloyd (1995), Why metasomatic fronts are really metasomatic sides, Geology, 23, 53-56.
130. Zheng, Y. F. (1993), Calculation of oxygen isotope fractionation in anhydrous silicate minerals, Geochim. Cosmochim. Acta, 57, 1079-1091.